Open source · Live in production
go-ledger
A production-grade double-entry payment ledger, in Go.
- Double-entry at the core — every transaction sums to zero, enforced in Go types and again by a Postgres CHECK constraint.
- Atomic posting under concurrency — SERIALIZABLE isolation with ordered row locks, stress-tested against thousands of concurrent posts.
- Idempotency keys and an append-only audit log, so retries are safe and history stays immutable.
- One trace from HTTP to SQL — OpenTelemetry spans, structured slog, Prometheus RED metrics.
- REST and gRPC over one shared domain core, with an OpenAPI playground you can run against the live API.
GoPostgrespgx + sqlcchigRPCOpenTelemetryDocker
